Hamilton is a city in Marion County, Iowa, home to about 107 people across 0.5 square miles. Its ZIP code is 50116.
Mostly Hamilton; also Marysville
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| Nearest major airport | Des Moines International Airport (DSM)43 miles away |
|---|---|
| Nearest city of 250,000+ | Omaha, NE161 miles away |
| Nearest city of 1 million+ | Chicago, IL276 miles away |
Straight-line distances from the center of Hamilton; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Hamilton had 119 residents in the 2020 census, down 17% since 2000.
It’s the 851st largest of 1,019 towns in Iowa by population.
Marion County grew from 24,159 residents in 1900 to 33,414 in 2020.
Marion County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 85°F in summer, and winter lows average 13°F. About 37.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Knoxville, IA weather station (12 miles away).
17,934 jobs at 859 businesses in Marion County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Libraries
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Marysville.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.